Just PHP FUN 061.

arr_check.php

<?php
# https://www.codewars.com/kata/582c81d982a0a65424000201 Is every value in the array an array?
function arr_check(array $a): bool {
  foreach($a as $v) if(!is_array($v)) return false;
  return true;
}

is_ruby_coming.php

<?php
# https://www.codewars.com/kata/5827acd5f524dd029d0005a4 
# Coding Meetup #3 - Higher-Order Functions Series - Is Ruby coming?
function is_ruby_coming($a) {
  return false !== array_search("Ruby",array_column($a,'language'));
}

is_same_language.php

<?php
# https://www.codewars.com/kata/58287977ef8d4451f90001a0 
# Coding Meetup #6 - Higher-Order Functions Series - Can they code in the same language?
function is_same_language($a) {
  return count(array_unique(array_column($a,'language'))) < 2;
}

just_php_fun_061.md

Just PHP FUN 061.

• https://www.codewars.com/kata/55da6c52a94744b379000036 Sum up the random string.
• https://www.codewars.com/kata/58287977ef8d4451f90001a0 Coding Meetup #6 - Higher-Order Functions Series - Can they code in the same language?
• https://www.codewars.com/kata/582c81d982a0a65424000201 Is every value in the array an array? (Error when use map and unique and check for 0 index, said need to be able work with associative arrays.)
• https://www.codewars.com/kata/579fa665bb9944f9340005d2 Rotate to the max.
• https://www.codewars.com/kata/5827acd5f524dd029d0005a4 Coding Meetup #3 - Higher-Order Functions Series - Is Ruby coming?

Started at 13:01 at 28.07.2020 Tuesday July.
Finished at 15:37 at 28.07.2020 Tuesday July. (2hrs 36minutes)

rotate_to_max.php

<?php
# https://www.codewars.com/kata/579fa665bb9944f9340005d2 Rotate to the max.
function rotate_to_max($n): int {
  $n = str_split(strval($n));
  rsort($n);
  return intval(implode($n));
}

sum_from_string.php

<?php
# https://www.codewars.com/kata/55da6c52a94744b379000036 Sum up the random string.
function sum_from_string(string $str): int {
    preg_match_all('/\d+/',$str,$matches);
    return array_sum(array_map('intval',$matches[0]));
}